Abstract
A robust impurity free quantum well intermixing process has been developed that allows complex photonic integrated circuits to be fabricated. Characteristics of the process are discussed and its attributes summarised. The use of the process in three widely differing fabricating applications is described: high-power high-brightness AlGaInP semiconductor laser diodes, nonlinear GaAs/AlGaAs waveguide devices and InGaAsP/InP crosspoint switches.
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